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国家自然科学基金(s20231020)

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Synthesis, Characterization and Theoretical Calculation of the Fulleropyrrolidines Containing Triphenylamine
2006年
N-Methyl-2-(4-N,N-diphenylaminophenyl)fulleropyrrolidine and N-methyl-2-(4-di-p-tolylaminophenyl)fulleropyrrolidine were synthesized via the 1,3-dipolar cycloaddition reactions under microwave irradiation. The molecular structures were identified and characterized by MS, UV-Vis, FT-IR, ^1H NMR and fluorescence spectra. Photoinduced intramolecular electron transfer process from C60 moiety to triphenylamine moiety have been studied by nanosecond laser flash photolysis. The optimized structure and the distribution of the frontier molecular orbitals for C60-TPA were obtained by using DFT method at B3LYP/6-31G(d) level. The results indicated that the intramolecular photoinduced electron transfer could occur in these compounds, which were in excellent agreement with the nanosecond transient absorption spectra observed experimentally in polar solvent. The electronic spectrum of the compound C60-TPA was studied by ZINDO method on the basis of the optimized geometrics, which was essentially consistent with experimental values.
王婷婷曾和平
关键词:FULLEROPYRROLIDINE
Combined Transient Spectra and Semiempirical Calculation of [60]Fullerenes Attached with Piperidinodithiocarboxylate and 7-Chloro-phenazine
2005年
[60]Fullerenes attached with piperidinodithiocarboxylate dyad (1) and 7-chloro-1,2,3,4-tetrahydrophenazine (2) were efficiently synthesized through Diels-Atder cycloaddition with dienes. The physical properties of the triplet states of these compounds, in which strong electron acceptor moieties were covalently attached to C60 cores, were investigated by nanosecond laser flash photolysis. The excited triplet states in benzonitrite have been evaluated by observing the transient absorption bands in the near-IR region. The HOMO and LUMO were calculated by semiempirical methods AM1, which could predict the intramolecular photoinduced electron transfer in 1 and 2, and the nanosecond transient absorption spectra observed experimentally in solution were in excellent agreement with the calculated ones.
曾和平杨艳丽文丽君
关键词:FULLERENE
Photophysical, Photochemical Characterization and Design Synthesis of the Fulleropyrrolidines Containing Triphenyl Amine Dyads
<正>The synthesis of several donor-bridge-fullerene (acceptor) systems has been reported, but in only a few cas...
WANG, Ting-Ting ZENG, He-Ping (College of Chemistry and Environment, South China Normal University, Guangzhou 510631)
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